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Watch Crystal
1257
crystal
A watch crystal providing a standard frequency of 32.768kHz, used in real-time clock applications and measuring instruments.
In stock
Specifications
15- Standard Frequency
- 32.768kHz
- Frequency Range
- 30kHz to 200kHz
- Operating Temperature
- -10°C to +60°C
- Storage Temperature
- -40°C to +85°C
- Frequency Tolerance
- ±20 ppm max. for 32.768kHz, ±30 ppm max. for 30kHz ~ 200kHz (not including 32.768kHz)
- Temperature Coefficient
- -0.034 ± 0.006 ppm/ T²
- Shunt Capacitance C0
- 0.8pF to 1.7pF typ. pF
- Load Capacitance Cl
- 12.5 pF typ. pF
- Motional Capacitance C1
- 1 ~ 4 fF typ. fF
- Capacitance Ratio
- 425 ~ 800 typ.
- Quality Factor
- 70,000 typ. (32.768kHz)
- Drive Level
- 1.0 µW max. µW
- Aging At 25c First Year
- ±3 ppm max. (32.768kHz) and ±5 ppm max. (others)
- Insulation Resistance
- 500 Mohms min. at 100Vdc ± 15V Mohms
- Package
- 6.2 x 02.1 mm cylinder package
Pinout
2Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | Pin 1 | GPIO | First pin of the crystal |
| 2 | Pin 2 | GPIO | Second pin of the crystal |
Interactive pinout
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1257
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